| Greentree to Oberkirch | 3,949.95 mi (6,356.83 km) |
| Greentree to Obernburg am Main | 3,955.24 mi (6,365.34 km) |
| Greentree to Obernkirchen | 3,885.78 mi (6,253.56 km) |
| Greentree to Oberschleissheim | 4,102.10 mi (6,601.70 km) |
| Greentree to Oberstdorf | 4,075.25 mi (6,558.47 km) |
| Greentree to Obertraubling | 4,103.97 mi (6,604.69 km) |
| Greentree to Obertshausen | 3,936.25 mi (6,334.78 km) |
| Greentree to Oberursel | 3,922.01 mi (6,311.86 km) |
| Greentree to Ochsenfurt | 3,998.21 mi (6,434.49 km) |
| Greentree to Ochsenhausen | 4,041.00 mi (6,503.36 km) |
| Greentree to Ochtrup | 3,812.22 mi (6,135.18 km) |
| Greentree to Odenthal | 3,840.39 mi (6,180.51 km) |
| Greentree to Oelde | 3,859.79 mi (6,211.73 km) |
| Greentree to Oelsnitz | 4,058.89 mi (6,532.15 km) |
| Greentree to Oer-Erkenschwick | 3,829.45 mi (6,162.90 km) |
